package wrapper;

public class IntergerDemo {
    public static void main(String[] args) {
        /*Integer i1=Integer.valueOf(5);
        Integer i2=Integer.valueOf(5);
        System.out.println(i1==i2);
        System.out.println(i1.equals(i2));

        Integer i=Integer.valueOf(5);
        int j=i.intValue();

        Integer m=5;
        int n=m;*/
        int max=Integer.MAX_VALUE;
        int min=Integer.MIN_VALUE;
        System.out.println("int的最大值为："+max+",最小值为："+min);

        String s1="40";
        int age=Integer.parseInt(s1);
        System.out.println(age);

        String s2="123.456";
        double price=Double.parseDouble(s2);
        System.out.println(price);
    }
}
